Selective Operation Key Locking for Electronic Devices
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Solution Overview
Problem
Existing lock functions in measurement devices do not allow users to selectively perform desired operations while the device is locked, as all operation keys are locked except for the unlocking operation, making it inconvenient for users who need to perform specific tasks during measurements.
Innovation Solution
Implementing a lock function that allows users to designate and register specific functions as operable even in the locked state, enabling the execution of these functions by assigning them to software keys, which can be accessed through a user key or displayed on the screen, even when the device is locked.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all operation keys are locked in the locked state except for the unlocking operation, then the security of the lock function is improved, but the ease of operation deteriorates because users cannot perform desired operations during measurements
Solution Approach 1:
The operation keys are segmented into two categories: locked keys and unlocked keys. The locked keys prevent unauthorized operations, while the unlocked keys allow necessary operations during measurements. This segmentation resolves the contradiction by dividing the key set to simultaneously achieve security and operational accessibility.
Solution Approach 2:
Different keys have different operational states (locked or unlocked) based on their specific function. Critical keys remain locked to maintain security, while necessary keys remain unlocked to allow operations during measurements. This local differentiation of key states resolves the contradiction between security and ease of operation.
2Reliability
If all operation keys are locked in the locked state, then the reliability of preventing erroneous operations is improved, but the adaptability deteriorates because users cannot perform necessary measurements or adjustments
Solution Approach 1:
The operation keys are divided into locked and unlocked groups, allowing the system to prevent erroneous operations on critical functions while permitting necessary measurements and adjustments on designated keys. This segmentation enables both reliable error prevention and operational adaptability.
Solution Approach 2:
The lock state of individual keys can be dynamically adjusted based on measurement needs. Keys that require operation during measurements remain unlocked, while others are locked. This dynamic configuration allows the system to adapt to different operational requirements while maintaining security where needed.
3Device complexity
If the lock function locks all operation keys without exception, then the simplicity of the lock implementation is improved, but the ease of operation deteriorates because users cannot selectively access necessary functions
Solution Approach 1:
The key management system is segmented to individually control the lock state of each key. This allows a relatively simple implementation where each key can be independently configured as locked or unlocked, providing selective access without requiring complex overall system redesign.
Solution Approach 2:
The system allows users to self-configure which keys should remain unlocked for operation during measurements. This self-service approach enables selective key access without requiring complex centralized control, balancing implementation simplicity with operational flexibility.
Data Source
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AI summary
An electronic device includes a display unit, and an operation unit. The electronic device has a lock function of locking operation functions on the operation unit such that the operation functions are temporarily inoperable. At least one of the operation functions is set to be selectively operable even in a lock state.